company blog about TI TMUX1574PWR 4-Channel Analog Switch With Powered-Off Protection And 1.8V Input Logic

TI TMUX1574PWR 4-Channel Analog Switch With Powered-Off Protection And 1.8V Input Logic

Shenzhen Mingjiada Electronics Co., Ltd., as a globally renowned authorised independent distributor of electronic components, has been supplying TI's TMUX1574PWR high-performance analogue switch products for an extended period. The TMUX1574PWR is a 4-channel analogue switch featuring power-down protection and 1.8V input logic, widely applied in servers, communication equipment, industrial automation, and other fields.

Product Overview Of TMUX1574PWR

The TMUX1574PWR is a complementary metal-oxide-semiconductor (CMOS) switch packaged in a TSSOP-16 package, offering a 2:1 single-pole double-throw (SPDT) switch configuration with four channels. This TMUX1574PWR device excels in signal routing and multiplexing applications thanks to its outstanding performance parameters and unique functional design.

One of the most notable features of the TMUX1574PWR device is its wide operating voltage range of 1.5V to 5.5V, enabling it to accommodate a wide range of applications from low-power portable devices to high-performance industrial systems. This wide voltage range design significantly enhances the product's versatility, allowing engineers to meet multiple power requirements within a single design.

The TMUX1574PWR supports bidirectional analogue and digital signal transmission on the source (SxA, SxB) and drain (Dx) pins and can transmit signals exceeding the power supply voltage (up to VDD×2), with a maximum input/output voltage of 5.5V. This feature makes it particularly suitable for applications requiring level conversion or mixed-voltage systems.

Specification Of TMUX1574PWR

Number of Channels: 4 Channel

Configuration: 4 x SPDT

On Resistance - Max: 4.5 Ohms

Supply Voltage - Min: 1.5 V

Supply Voltage - Max: 5.5 V

On Time - Max: 35 us

Off Time - Max: 95 ns

Minimum Operating Temperature: - 40 ℃

Maximum Operating Temperature: + 125 ℃

Product Type: Analog Switch ICs

Core Technology And Functional Features Of TMUX1574PWR

Power-off protection: The TMUX1574PWR provides power-off protection of up to 3.6V on the signal path, ensuring effective isolation when the power supply voltage is removed (VDD=0V). This feature prevents the switch from reverse-supplying the power rail through internal ESD diodes, thereby avoiding potential system damage.

Failure Protection Logic: The TMUX1574PWR's unique circuit design allows logic control pin voltages to be applied before power pin voltages, protecting the device from potential damage. This feature is particularly important in systems with complex power sequencing management.

1.8V Logic Compatibility: All control inputs of the TMUX1574PWR have thresholds compatible with 1.8V logic levels, ensuring compatibility with TTL and CMOS logic within the effective power supply voltage range. Integrated pull-down resistors on the logic pins eliminate the need for external components, reducing system size and cost.

TMUX1574PWR's exceptional electrical performance:

Low on-resistance: Only 2Ω (typical), reducing signal attenuation

Low on-capacitance: 7.5pF (typical), maintaining signal integrity

High bandwidth: Up to 2GHz, supporting high-speed signal transmission

Operating temperature range: -40°C to +125°C, suitable for harsh environments

Pin compatibility: Pin layout is compatible with the SN74CBTLV3257, facilitating upgrades and replacements in existing designs.

Typical Application Of TMUX1574PWR

1. Flash memory sharing systems: The TMUX1574PWR enables dynamic allocation and sharing of flash memory resources in multi-processor systems, improving hardware resource utilisation.

2. Communication equipment:

Signal routing in servers and data centre switches

Signal switching in wireless infrastructure

Interface multiplexing in network routers

3. Industrial automation:

Signal selection in industrial control systems

Multiplexing in test and measurement equipment

Interface management in building automation systems

4. Consumer Electronics:

Interface expansion in personal computers and laptops

Peripheral management in electronic point-of-sale (ePOS) systems

Control signal routing in smart home appliances

5. Protocol Multiplexing: The TMUX1574PWR supports signal multiplexing for multiple protocols including JTAG, SPI, eMMC, UART, I2C, RGMII, TDM, I2S, and MIPI, simplifying system design.

In the automotive electronics field, although the TMUX1574PWR itself is not an automotive-grade product, its wide temperature range (-40°C to +125°C) and reliable performance make it suitable for certain non-safety-critical automotive applications, such as signal switching in in-vehicle infotainment systems.